Polariton-Polariton Interactions Revealed in a One-dimensional Whispering Gallery Microcavity.
- Authors
- Type
- Published Article
- Journal
- Nano Letters
- Publisher
- American Chemical Society
- Publication Date
- Mar 11, 2020
- Volume
- 20
- Issue
- 3
- Pages
- 1552–1560
- Identifiers
- DOI: 10.1021/acs.nanolett.9b04121
- PMID: 32097561
- Source
- Medline
- Keywords
- Language
- English
- License
- Unknown
Abstract
Coulomb interactions are essential to the dynamics and optical properties of exciton-polaritons. Here, we report an experimental observation of polariton-polariton interactions far beyond theory in a one-dimensional whispering gallery microcavity. Based on the unique half-light half-matter nature, we were able to clarify the effects of excitons, quantum confinement, and nonthermalized polariton distribution in the measurements of the polaritonic interactions. Spectacularly, our position-scan and power-scan investigations both revealed that the polariton-polariton interaction strength is up to 2 orders of magnitude larger than theoretical predictions. These results suggest that polaritonic interactions are far more complicated than the expectation and should be re-examined in polariton physics and devices involving polaritonic interactions.
